The velocity distribution for flow over flat plate is given $$u = \frac{3}{4}y - y^2$$ in which u is the velocity in m/s at a distance y meter above the plate. Shear stress at $$y = 0.15 m$$ is (Take $$\mu$$ for fluid = 8.5 poise)

A

0.3825 Pa

B

0.3815 Pa

C

0.3835 Pa

D

0.3845 Pa